Miren – Rome
This branch comes from Slovenia and enters Italy by passing through Friuli Venezia Giulia, passing through Aquileia, the centre of Christianity and, thanks to its port, a crossroads for trade in glass, iron and amber.
Passo Monte Croce Carnico – Plöckenpass – Rome
This branch route crosses the Carnic Alps and, after crossing the Monte Croce Carnico pass, descends into the Drava valley to the vicinity of Lienz. It was a very important Roman trade route for goods coming from the east.
Reschenpass – Rome
The road, known today as the Romantische Straβe, descended into what is now Austria and then entered Italy via the Reschen Pass, because it was the lowest pass in the Alps, being close to Switzerland.